Yellow-bellied Sea Snake

Yellow-bellied Sea Snake

Hydrophis platurus

Silhouette: Dr Christina Zdenek · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability Insufficient data
at Manuel Antonio National Park
2 Verified sightings at Manuel Antonio National Park From 2019 to 2026
47 Verified sightings across all 15 parks From 2019 to 2026
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Yellow-bellied Sea Snake

The yellow-bellied sea snake (Hydrophis platurus) is an extremely venomous species of snake from the subfamily Hydrophiinae (the sea snakes) found in tropical oceanic waters around the world except for the Atlantic Ocean. For many years, it was placed in the monotypic genus Pelamis, but recent molecular evidence indicates it lies within the genus Hydrophis.

In 1766, Linnaeus published the original description of the yellow-bellied sea snake, naming it Anguis platura (Anguis meaning snake). In 1803, François Marie Daudin created the new genus Pelamis and assigned this species to it, referring to it as Pelamis platuros. In 1842, Gray described what he thought was a new species and called it Pelamis ornata (subsequently P. ornata became a synonym of P. platura). The commonly used genus name Pelamis is derived from the Ancient Greek word for "tunny fish", which presumably refers to the habitat or what Daudin thought they ate. The specific name platurus is a combination of the Ancient Greek words platys "flat" and oura "tail", referring to the flattened tail. The word Pelamis is a feminine noun and means young or small tunny fish. In 1872, Stoliczka introduced the name Pelamis... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Las Baulas Marine National Park 🇨🇷 Costa Rica
~20%
2 Corcovado National Park 🇨🇷 Costa Rica
~10%
3 Utría National Natural Park 🇨🇴 Colombia
Insufficient data
4 Santa Rosa National Park 🇨🇷 Costa Rica
Insufficient data
5 Coiba National Park 🇵🇦 Panama
Insufficient data
6 Booderee National Park 🇦🇺 Australia
Insufficient data
7 Ostional Wildlife Refuge 🇨🇷 Costa Rica
Insufficient data
8 Piedras Blancas National Park 🇨🇷 Costa Rica
Insufficient data
9 Machalilla National Park 🇪🇨 Ecuador
Insufficient data
10 Cabo Blanco Absolute Nature Reserve 🇨🇷 Costa Rica
Insufficient data
11 Marino Ballena National Park 🇨🇷 Costa Rica
Insufficient data
12 Darién National Park 🇵🇦 Panama
Insufficient data
13 Manuel Antonio National Park 🇨🇷 Costa Rica
Insufficient data
14 Garden Route National Park 🇿🇦 South Africa
Insufficient data
15 Table Mountain National Park 🇿🇦 South Africa
Insufficient data
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